Mining-machine and truck.



N. D. IEVIN.

MINING MACHINE AND TRUCK.

APPLICATION min MAR. n. 1914. RENE\'1D1UNE30.1917.

2 SHEETS-SHEET I.

HPI.

Ilf.III I m w m i 5 NN /W N. D. LEVIN.

MINING MACHINE AND TRUCK. APPLICATION FILED MAR. I7. I9I4. RENEWED JUNE 30.1917.

Patented Nov. 20, 1912-.

2 SHEETS-SHEET z.

NELS DAVID LEVIN, O F COLUMBUS, Ofi-10, ASSGNOR T0 THE JEFFREY MANUFAC- TURING GMPN'Y, F COLUMBUS, OHG, A CRPORTON OF OHIG.

A lieaton filed March 1'?, Serial No, 85,389. Renewed .urie 30 1917.

. fnl improvements in Mining-Machines and.

Trucks, of which the following is a specification, reterence being had 'therein 'to the .accompanying drawing.

My present invention relates to certain new and uset'nl improvements in. mining machines and trucks for the transportation ot said machines about the rooms and galleriesof the mine` and especially to trucks which are propelled along' the tracks of the mine by power derived Yt'rom the motor el the mining machine being transported.

ll am aware that 'tracks ofthis character have been heretofore proposed. my especial objects being to provide improved means for connecting the motive power ot the mining machine with the transmission gearing ofthe trucks; 'to provid a truck having an electric cable reelwith improved for transmi'ttiiigy power to theI track wheels and to Vthe reel; to provide improved means for controlling the inovementsl or the truck along the mine tracks; and to provide improved facilities for loading' and unloading the mining' machine. The foregoing' objects, and others more or less ancillary to them. are. attained in the structure set 'forth the annexed specification in connection with the. accompanying drawings.

n the drawings,

Figure l is a plan View of a truck enibodying my invention;

'Fig'. 2 is a side `elevation of the track shown in Fig. 1, and of the mining machine (shown in dotted outline) loaded thereon for transportation; 1

Fig. 3 is a vertical section on `the line 3-53 of Fig. l;

Fig. f1 is a vertical section on the line of Fig. 1;

Fig. 5 Fig: 4;

Fig'. 6 is a. side elevation of the truck in position for loading the mining machine.

There are several types of machine in use for the undercutting of coal to facilitate its beingbroken down for removal from the mine. (lne of the most common in use at the present time comprises a base frame, adapted to slide over the floor of the mine,

is a section on the line 5-5 el;

Specification 01 Letters Patent.

'ne-wable bits adapted .lPatent-ed Nov. 2G?, 1911's.

serial no. 177,965.

from the. forward end of which projects a cutter arm havingr a cutter chain with reto ent the coal. Such machines are usually provided with winding' drums having' ropes adapted to be anw chored to suitable abutments. and yin operation the machines are propelled and guided along' the 'lace oi' the coal h v the Winding' in and paying ont of the ropes. A'terthe entire length ot the working' face has been undercut it is desirable that the machine shall he loaded upon a truck and transported to another working` place where it. shall be unloaded and put to work with as little delav as possible.

ln in v present invention 1 have produced such a track having' a frame composed of two longitudinal angle bars: l joined by cross members' 3 and l and bv the transmission gear case casting Suitable axle boxes G are bolted to these longitudinal angle loa'rs and in these are journaled the axles 7 and 5l having' wheels 9 adapted to travel along the rails 10 oi' the mine track. The axles P' and f'i are coupled together by an endless chain 11 engaging; suitable sprocket wheels carried bv the wheels.

lilntending transversely oit' the truck frame. within the gear case 12, is a driving' shaft 13 which is driven Jfrom the mining machine motor as will presently appear. @n one end o'li'the shaft 13 is mounted for free rotation a sprocket wheel 14 having' an inwardly1 irojeeting hub 15 which is journalcd in the bearing' 16 of the gear case 12, and has on its inner end clutch teeth 17 en Aagreable with similar teeth of the clutch member 18 splined to the shaft.. The sprocket wheel 1-1 is connected by a chain 19 and sprockety Wheel 2U to the axle 1tlto propcl the trnclr. Means for shifting the clutch member 18 into and out| of engagement with the sprocket wheel 14 is provided in a yoke 21 attached to a shaft 22 extending through the walls of the l`gear ease 12 and having a hand lever 23 convenient to the hand of the operator.

The shaft, 13 is supported at its other end in a hearing 21 of the gear ease. Mounted tor t'ree rotation upon the shaft 13, adj acent. the hearing 24 is a sheave wheel 25 which is conneetible to the said shaft by a pin clutch comprisine' n pin 26 slidable in apertures of the hub 2t Iand in a lug 28 formed on the rim ot theI Wheel. Surrounding the pin 26 cable 35. is a flexible cable having con is a coiled spring 29 the outer end .of which abuts against the lug 28 while the inner end bears against the handle 30 which is secured to the pin, and by which it may be manipulated. rEhe spring E29 tends to force the pin 26 inward to engage an aperture 31 of the shaft 13. W hen it is desired that the wheely 25 shall not be rotated by the shaft 'i3 the pin 26 may be'foiced outward to dis/engage the aperture 31 and locked in that position 'by rotating the handle 30 into engagement of the mine. The cable reel 34 has its shaft 34nl journaled in hearing boxes 36 carried byl a yolre frame 37 the lower end of whic bears in. notches of the angle irons 38 which are secured to the platform 39 of the truck. The center of gravity of the reel 34 is disposed to one side of the pivotal supportl of the frame 37 in the notches of the irons 38, and consequently a part of the weight of the @able reel 34 is carried by the rope and a sutlicient tension is maintained therein to properly drive the cable reel to wind the cable 35. A plurality of notches are provided in the angle irons 38 to allow e measure of adjustment of such tension. One of the boxes 36 has within it the mechanism for p'athering' the positive current from the positive conductor of the cable 35, and the other lbox is similarly adapted to collect current from the negative conductor of the ductors 40, 40, which lead, respectively, from the terminals in the two bearing boxes l to the corresponding' terminals of the min- 'A ing machine motor.

Mounted for Iree rotation upon the transverse shaft 13 are two bevel gears 41, 41 both meshing with a bevel pinion 42 formed on the rearward end of a sleeve 43 journaled ina bearing 44 of the gear case 12. Slidable within the sleeve 43 but rotatably connected1 thereto, is a shaft 45 which is journaled in a bearing 46. Keyed to the shaft 45 adjacent to the forward end of the bearing 46 is a bevel pinion 47 adapted to mesh with a gear 48 of the miningmachine when it is in proper position upon the track. A collar 49 inned to the shaft 'l5 adjacent the rear end of the bearing 46, secures' the shaft against longitudinal movement. relative to the bearing. Formed on the sides of the bearing 46 are wings 50 slid'able in guides 51 formed at the ends of the arms 52 extending from the gear case 12. One of these wings 50 and the corresponding guide are perforated with registering apertures adapted/to receive the inet/,eea

pin 51u to'loclr the bearing from movement relative to the guide Way.

After the mining machine is in position i upon the truck the pin 51a lis'withdrawn., the' bearing 46 and shaft'45 moved forward fto;

bringthe pinion 47 into engagement with' the gear 48 of the mining machine andthepin again inserted to maintain the parts in working relation.' When the truck has 'arrived at rthe place Where the machine is to be unloaded, the pin is again Withdrawn, the bearing 46 and pinion 47 moved to their disengagiiig position and the pin again inserted.

'The bevel gears 41, 41 are connectible to the shaft 13 through multiple disk friction clutches vto drive it, the direction of rotation depending upon which of4 the gears is brought into service. As the friction clutches are identical in construction, a de'- scription of one Will suffice for both.

Formed on theback of each of these bevel' gears 41, 41, is a cylindrical extension 53 having a plurality of longitudinal ribs formed on its inner side, and Within this i cylindrical extension is a' clutch member 54 keyed to the shaft 13 and having on its outer side a plurality of longitudinal ribs;` Beto' press the friction `disks together. Po.

sitioned adjacent the hub of vthe pressure member 56 is a thrust collar 57 adapted to transmit' Vthe pressure of the shifting yoke 58 to the pressure member and through it to the disks of the clutch to drive the shaft, a suitable antifriction bearing 59 be.

ing interposed between the collar 57 and the pressure member. Positioned between the wheels 41, 41 on the shaft 13 is an antifriction bearing 6() supported in a bearing 61 f of the gear case to which it transmits the thrust of the friction clutches.

The shifter yoke 58 is double ended, hav; ing a fork at each end adapted to engage the sliding collars57 by which the ball bearings 59 are pressed against the pressure members 56. Formed :it the middle of the shifting yoke 58 is an extension 63 which projects upward throughs suitable aperture in the gear case 12', and is formed near its upper end with an aperture through which extends :fi push rod 64. The push rod 64 is screw threaded to receive the nuts 65 and 66 engaging the springs 67 and 68 which abut against the extension 63. Formed at the end of the rod 64 is an eccentric strap 69 coperating withA the eccentric 70 to shift the yoke 58 and with it the pressure members of :the friction clutches. Theeccentric 7 0 is journaled on a stud 7lv attached to the gear case 12, and rotated thereon by a hand lever 72 convenient to the hand of the operator. Pins 73 are provided to limit A the rotation of the eccentric.

chime. Pivoted to one of these angle bars 7 5 is aabar 77 having a1 longitudinal slot 7% on the side of which is formed a plurality bar 77 to prevent the truck falling back as the machine passes off its forward end.

lVhat I claim is1- l. The combination with a mining ma chine having` power driven gearing,4 of a into mesh with a gear-on the mining machine after the latter has been moved into position .for transportation upon the truck` Pivoted at 74 on the truck frame are two truck therefor having' a frame adapted to 70 angle bars 75 connected together at their support the miningmachine, wheels supfree endsby a cross bar 76 to form a supporting the frame, and gearing on the frame port for the rear end of the truck frame for transmitting` powerto the truck wheels when it is tilted to bring the forward end comprising a movably mounted gear adaptinto position for loading the mining maed to be moved from an inoperative position 75 of notches adapted to engage with a stud 2. The combination with a mining ma- 79 projecting from `the truck frame and chine having power driven gearingfot' a 80 serving to retain the bars 7 5 in any desired truck 'therefor having a frame adapted to pfiti( A hook 80 is provided to hold the y support the mining` machine, wheels 'supcia/ss ..r 7G clear of vthe track while the porting the frame, and gearing on the frame truck is traveling from room to room. for transmitting power to the truck wheels Formed on the gear case l2 is an upstandcomprising a gear mounted so as to permit 85 ing flange 8l having in its forward side a its aXial movement from an inoperative ponotch 82 adapted to engage the terminal sition into mesh with a gear ofthe mining of the feed rope S3 of the mining machine, machine after thev latter has `been moved when pulling the machine upon th'e truck.

The operation of the truck is as follows: The undercutting of the coal at a given place being completed and the machine re- 80 quired at a distant place, the rope S3 secured the truck will be tilted on the forward wheels and the rear support will fall into place and be automatitaillv locked bv the to afford convenient anchorage therefor into position for transportation upon theI truck.

3. The combination with a miningl machine comprising an electric motor and gearing driven thereby, of a truck for the mining machine havinga frame adapted to supframe near one end thereof Vand adapted when the said end of the frame 1s lifted to move automatically into position to support in the notch 82 of the flange Si, the rear port it, wheels supporting the, frame, an 95 end of the truck elevated, the truck support electric cable reel mounted on the truck, an adjusted and the Winding drum of the miur electric cable arranged to be wound upon ing machine started. As the rope is wound and paid out from said reel, flexible conducup, the machine, guided by the flanges of the tors connecting the terminals of the cable longitudinal angle bars 1, will be drawn to reel with the terminals of the motor, and 100 its proper place on the truck. The rear end transmission gearing on the truck adapted of the truck will then be lowered and the to drive the truck wheels and the cable reel support secured by the hook S0, the bearin unison, said transmission gearing coming '46 adjusted to connect the pinion 47 prising a member adapted to engage with with the gear 4 8, the removable. cable reel Aand be driven 'by a member of the miningr 105 34 loaded and its driving rope 32 adjusted. machine gearing, a clutch interposed be- The machine will thenbe ready for traveltween the said driven member and the reel, ing. After the mining` machine motor is and a second clutch interposed between the started the control of the truck is effected said driven member and the track wheels entirely by the eccentric lever 72, which will whereby the track wheels and the cable reel be turned to one side forfor-fard movement` can be driven in unison or either can be to the other side for reverse. and in the middriven independently of the other. dle to disconnect the power. No brakes 'are 4f. In a mining machine truck, the combi- 50 provided as vthe motion of the truck can nation of' a 4frame adapted to support amin be retarded by applying power in a reverse ing machine, wheels supporting said frame, direction by a simple manipulation of' the and a support pivotally connected to the -hand lever 72. truck frame near one end thereof and adaptlVhen the machine has arrived at thel deed when the said cud of the truck frame is 55 sired location the rear truck support is unlifted to move automatically into position t0 hooked and allowed to rest on the track support the lifted end of the truck frame railsr` the cable. reel is removed, the pinion v from the ground.

47 drawn back out of' mesh with the gear 5. In a mining machine truck, the combi- 48, and the rope S3 attached to some suitnation of' a frame adapted to support a min- 60 able anchorage to pull the machine from ing machine, wheels supporting said frame,

the truck. its the machine moves forward a support pivotally connected to the truck the frame from the ground, and means for secnring'the support in operative position.

6. In a mining machine truck, the combisaid support'when released being adapted when the said end of' the truck frame is chine having power driven gearing, of a.

lifted to move'automatically into position.

to support the said end of the frame from the ground.

7 In a mining machine truck, the combination of a frame adapted to support a vmining machine, wheels supporting said frame,

,a strut-like support pivotally connected to 'the truck frame near one end thereof and adaptedto swing downward into position to support the end of the truck `from the ground when said end is lifted, and means for normally securing' the support in a raised, inoperative position.

8. The combination with a mining matruck therefor having a frame adapted to support the mining machine, Wheels supporting the frame, gearing on the frame for transmitting power t0 the truck wheels comprising a movablv mounted gear adapted to4 he moved from an inoperative` position into mesh with a gear on the mining machine after the latter has been moved into position for transportation lupon the truck, and means for securing the movably mounted gear in operative and inoperative positions.

9. The combination with a mining machine comprising an electric motor land gearing driven thereby, of a truck for the mining machine having a frame adapted to support it, wheels supporting the frame, an electric cable reel mounted on the truck, an electric cable'arrang'ed to be wound upon and paid out from said reel, flexible conductors connecting the terminals of the cable reel with the terminals of the motor, and gearing on the truck adapted to transmit the power of the motor to the truck 1 wheels and to the cable reel, the train of gearing transmitting the power of the motor tothe truck wheels comprising reversing'fi` `gearing in which the power is transmitted'. .through friction clutches, substantially yas and for the'purpose set forth.

In testimony whereof, I aiilx my signature, in presence of' two Witnesses. NILS DAVID LEVIN.

llitnes'ses P. J. HERVEY, DUDLEYT. FISHER. 

